Manchester City are more interested in Champions League but they don't sacrifice Premier League. If they can not win Premier League, it can be because another competitor have too good performance in this season to beat Manchester City.
I don't think with Manchester City sacrifice with Primer League and most priority Champion League in this season because both trophy most important have to get, I know with Manchester City trouble never reach for getting Champion League trophy after several season.
Primer League still not closed opportunity for Manchester City to get tittle although remaining 5 points awhile from Arsenal, I think consistency performance after World Cup over give chance back for Manchester City back to the top standing position.
On Champion League Leipzig become opponent for Manchester City on 16 round and I don't think problem for City lead to next round, actually not optimist with Manchester City get Champion League trophy if face Real Madrid on early round stage.